# Incident 20110122001979I: Boeing 737-824, Memphis, TN, January 22, 2011

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: January 22, 2011, 06:20 local time
- Place: Memphis, TN
- Damage: No damage
- Phase of flight: Descent
- Operating rules: Air carrier (Part 121)
- Operator: CALA
- Location: 35.1495° N, 90.0490° W: Placed by OpenAirDocs: center of Memphis, TN, within about 10 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.1495&lon=-90.0490&mi=10
- Aircraft: N73299, registered now (https://openairdocs.org/aircraft/N73299) (OpenAirDocs)
- Registry model: Boeing 737-824 (registry code 13844BZ, https://openairdocs.org/model/boeing-737-824) (OpenAirDocs)
- Registry engine: CFM International CFM56 series (registry code 13802, https://openairdocs.org/engine/cfm-international-cfm56-series) (OpenAirDocs)
- Reported make and model: BOEING 737-824
- Reported engine: CFM INTL. CFM56 SERIES
- People aboard: 0
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport
- Pilot flight hours: 20,000 total, 0 in this make and model, 0 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20110122001979I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON JANUARY 22, 2011, MEM ARTCC REPORTED AN INCIDENT INVOLVING A LOSS OF SEPARATION BETWEEN CALA 501 (B737-800) AND N537DF (BE-400-A). APPROXIMATELY 1220 UTC, CALA 501 REQUESTED DESCENT TO A LOWER ALTITUDE DUE TO A LOSS OF CABIN PRESSURIZATION. MEM ATC CLEARED CALA 501 INITIALLY TO FL 350. DURING THE STEP DOWN TO A LOWER ALTITUDE, MEM ATC ADVISED BOTH CALA 501 AND N537DF OF EACH OTHERS CLOSE PROXIMITY AND LOCATION. N537DF WAS IN A CLIMB TO FL340. CALA 501 REQUESTED TO CONTINUE THE DESCENT TO A LOWER ALTITUDE. CALA 501 ACKNOWLEDGED THAT IT WAS AN EMERGENCY SITUATION. MEM ATC ADVISED CALA 501 THAT IF THEY WERE DECLARING AN EMERGENCY AND HAD VISUAL CONTACT WITH N537DF, THEY COULD CONTINUE THEIR DESCENT. BOTH CALA 501 AND N537DF HAD VISUAL CONTACT WITH EACH OTHER. DESCENDING OUT OF FL 340, BOTH AIRCRAFT PASSED WITHIN 500 FEET OF OTHERS AIRSPACE. AFTER PASSING, BOTH AIRCRAFT CONTINUED ON THEIR ROUTE OF FIGHT WITHOUT FURTHER INCIDENT.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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